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Commit | Line | Data |
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fc9c1727 | 1 | /* |
caf72ff3 | 2 | * Usefuls routines based on the LzmaTest.c file from LZMA SDK 4.65 |
fc9c1727 | 3 | * |
caf72ff3 | 4 | * Copyright (C) 2007-2009 Industrie Dial Face S.p.A. |
fc9c1727 LCM |
5 | * Luigi 'Comio' Mantellini (luigi.mantellini@idf-hit.com) |
6 | * | |
7 | * Copyright (C) 1999-2005 Igor Pavlov | |
8 | * | |
9 | * See file CREDITS for list of people who contributed to this | |
10 | * project. | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or | |
13 | * modify it under the terms of the GNU General Public License as | |
14 | * published by the Free Software Foundation; either version 2 of | |
15 | * the License, or (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
25 | * MA 02111-1307 USA | |
26 | */ | |
27 | ||
28 | /* | |
29 | * LZMA_Alone stream format: | |
30 | * | |
31 | * uchar Properties[5] | |
32 | * uint64 Uncompressed size | |
33 | * uchar data[*] | |
34 | * | |
35 | */ | |
36 | ||
37 | #include <config.h> | |
38 | #include <common.h> | |
fafbb2c3 | 39 | #include <watchdog.h> |
fc9c1727 LCM |
40 | |
41 | #ifdef CONFIG_LZMA | |
42 | ||
43 | #define LZMA_PROPERTIES_OFFSET 0 | |
caf72ff3 | 44 | #define LZMA_SIZE_OFFSET LZMA_PROPS_SIZE |
fc9c1727 LCM |
45 | #define LZMA_DATA_OFFSET LZMA_SIZE_OFFSET+sizeof(uint64_t) |
46 | ||
47 | #include "LzmaTools.h" | |
caf72ff3 | 48 | #include "LzmaDec.h" |
fc9c1727 LCM |
49 | |
50 | #include <linux/string.h> | |
51 | #include <malloc.h> | |
52 | ||
caf72ff3 LCM |
53 | static void *SzAlloc(void *p, size_t size) { p = p; return malloc(size); } |
54 | static void SzFree(void *p, void *address) { p = p; free(address); } | |
55 | ||
fc9c1727 | 56 | int lzmaBuffToBuffDecompress (unsigned char *outStream, SizeT *uncompressedSize, |
caf72ff3 | 57 | unsigned char *inStream, SizeT length) |
fc9c1727 | 58 | { |
caf72ff3 LCM |
59 | int res = SZ_ERROR_DATA; |
60 | int i; | |
61 | ISzAlloc g_Alloc; | |
62 | ||
63 | SizeT outSizeFull = 0xFFFFFFFF; /* 4GBytes limit */ | |
caf72ff3 LCM |
64 | SizeT outProcessed; |
65 | SizeT outSize; | |
66 | SizeT outSizeHigh; | |
67 | ELzmaStatus state; | |
68 | SizeT compressedSize = (SizeT)(length - LZMA_PROPS_SIZE); | |
69 | ||
dd059842 MV |
70 | debug ("LZMA: Image address............... 0x%p\n", inStream); |
71 | debug ("LZMA: Properties address.......... 0x%p\n", inStream + LZMA_PROPERTIES_OFFSET); | |
72 | debug ("LZMA: Uncompressed size address... 0x%p\n", inStream + LZMA_SIZE_OFFSET); | |
73 | debug ("LZMA: Compressed data address..... 0x%p\n", inStream + LZMA_DATA_OFFSET); | |
74 | debug ("LZMA: Destination address......... 0x%p\n", outStream); | |
caf72ff3 LCM |
75 | |
76 | memset(&state, 0, sizeof(state)); | |
77 | ||
78 | outSize = 0; | |
79 | outSizeHigh = 0; | |
80 | /* Read the uncompressed size */ | |
81 | for (i = 0; i < 8; i++) { | |
82 | unsigned char b = inStream[LZMA_SIZE_OFFSET + i]; | |
83 | if (i < 4) { | |
84 | outSize += (UInt32)(b) << (i * 8); | |
85 | } else { | |
86 | outSizeHigh += (UInt32)(b) << ((i - 4) * 8); | |
87 | } | |
88 | } | |
89 | ||
90 | outSizeFull = (SizeT)outSize; | |
91 | if (sizeof(SizeT) >= 8) { | |
92 | /* | |
93 | * SizeT is a 64 bit uint => We can manage files larger than 4GB! | |
94 | * | |
95 | */ | |
96 | outSizeFull |= (((SizeT)outSizeHigh << 16) << 16); | |
97 | } else if (outSizeHigh != 0 || (UInt32)(SizeT)outSize != outSize) { | |
98 | /* | |
99 | * SizeT is a 32 bit uint => We cannot manage files larger than | |
f68ab43d MF |
100 | * 4GB! Assume however that all 0xf values is "unknown size" and |
101 | * not actually a file of 2^64 bits. | |
caf72ff3 LCM |
102 | * |
103 | */ | |
f68ab43d MF |
104 | if (outSizeHigh != (SizeT)-1 || outSize != (SizeT)-1) { |
105 | debug ("LZMA: 64bit support not enabled.\n"); | |
106 | return SZ_ERROR_DATA; | |
107 | } | |
caf72ff3 LCM |
108 | } |
109 | ||
dd059842 MV |
110 | debug ("LZMA: Uncompresed size............ 0x%x\n", outSizeFull); |
111 | debug ("LZMA: Compresed size.............. 0x%x\n", compressedSize); | |
caf72ff3 LCM |
112 | |
113 | g_Alloc.Alloc = SzAlloc; | |
114 | g_Alloc.Free = SzFree; | |
115 | ||
116 | /* Decompress */ | |
117 | outProcessed = outSizeFull; | |
fafbb2c3 | 118 | |
119 | WATCHDOG_RESET(); | |
120 | ||
caf72ff3 LCM |
121 | res = LzmaDecode( |
122 | outStream, &outProcessed, | |
123 | inStream + LZMA_DATA_OFFSET, &compressedSize, | |
124 | inStream, LZMA_PROPS_SIZE, LZMA_FINISH_ANY, &state, &g_Alloc); | |
125 | *uncompressedSize = outProcessed; | |
126 | if (res != SZ_OK) { | |
127 | return res; | |
128 | } | |
129 | ||
130 | return res; | |
fc9c1727 LCM |
131 | } |
132 | ||
133 | #endif |